Denial of Service in BIND
ID: | 200702-06 |
Distribution: | Gentoo |
Plattformen: | Keine Angabe |
Datum: | Sa, 17. Februar 2007, 22:54 |
Referenzen: | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0493
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-CVE-2007-0494 |
Applikationen: | BIND |
Originalnachricht |
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--9UV9rz0O2dU/yYYn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200702-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: BIND: Denial of Service Date: February 17, 2007 Bugs: #163692 ID: 200702-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== ISC BIND contains two vulnerabilities allowing a Denial of Service under certain conditions. Background ========== ISC BIND is the Internet Systems Consortium implementation of the Domain Name System (DNS) protocol. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/bind < 9.3.4 >= 9.3.4 *>= 9.2.8 Description =========== An unspecified improper usage of an already freed context has been reported. Additionally, an assertion error could be triggered in the DNSSEC validation of some responses to type ANY queries with multiple RRsets. Impact ====== A remote attacker could crash the server through unspecified vectors or, if DNSSEC validation is enabled, by sending certain crafted ANY queries. Workaround ========== There is no known workaround at this time for the first issue. The DNSSEC validation Denial of Service can be prevented by disabling DNSSEC validation until the upgrade to a fixed version. Note that DNSSEC validation is disabled on a default configuration. Resolution ========== All ISC BIND 9.3 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/bind-9.3.4" All ISC BIND 9.2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/bind-9.2.8" References ========== [ 1 ] CVE-2007-0493 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0493 [ 2 ] CVE-2007-0494 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-CVE-2007-0494 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200702-06.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 --9UV9rz0O2dU/yYYn Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBRdd4lzvRww8BFPxFAQINiAf9EzMpGuzxGaxRsLy3AzNot5vLRw38u5dU wmn5Ekz4A+PH6OEFxDTbsz3NVfEEUUIWNGGm9l5JSMdrC4v34pIG2K2CTMyS/xiG 6FGGNuwgoH+kvUuNRmqLL6HX450OivwJWSRIULMwyOVtSsdRApUf+fp5IlNdm2yT aiIZTv738Lls1XRdauluiPq+AZmlQiMb9FdSobGliluWs2OLBh4sBCSfSSjmdUQ4 w9jCApBbhZIgVQ8Px+/yrEVrD0GWEILH842S3db34zZHxV6bRaA0dVhFXsQyfs4J T8jwx0DAfRW5aWs6rQRxD2wx3Py5Y+aWP2FwqjlfTJRW4Z/5jbbsYA== =NUW4 -----END PGP SIGNATURE----- --9UV9rz0O2dU/yYYn-- -- gentoo-announce@gentoo.org mailing list |